package com.xzh.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {
    @Bean
    public RequestInterceptor requestInterceptor()
    {
       return new RequestInterceptor() {
           @Override
           public void apply(RequestTemplate requestTemplate) {
               //1、通过RequestContextHolder拿到刚进来的请求数据
               RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
               ServletRequestAttributes attributes = (ServletRequestAttributes) requestAttributes;
               if(attributes!=null){
                   HttpServletRequest request = attributes.getRequest(); //老请求
                   if(request!=null)
                   {
                       System.out.println("feign远程之前先进行requestInterceptor.apply");
                       //同步请求头数据 Cokie
                       String cookie = request.getHeader("Cookie");
                       //给新请求同步老请求的Cookie
                       requestTemplate.header("Cookie",cookie);
                   }
               }
           }
       };
    }
}
